archie wrotejust once or every time ?
Sometimes the database will glitch like this for instance:
error: failed retrieving file 'obarun.db' from www.obarun.org : Unknown SSL protocol error in connection to www.obarun.org:443
Eric is fully aware of this bug, The only way to workaround it is to do -Sy{y,u}
So yes i strongly recommend doing it everytime you upgrade.